Plug U (Yellow)• DC Plug Outer/Diameter Inner – Square.• Compatible with Lenovo IdeaPad, Thinkpad Laptops.• Compatible with Lenovo IdeaPad, Thinkpad Ultrabooks. Features
• This adaptor is intended for use on a 100~240Volt AC 50-60Hz mains supply.• Supplied with eight Automatic interchangeable power plugs for maximum compatibility.• Automatic Power Switching.• LED light indicating when the power supply is connected to the supply.• Please note: Only 8 tips included. There is no Q Tip.